Marine Batteries - 10/2018
YACHT SERVICE LAKE MAGGIORE
MARINE ELECTRICITY LAKE MAGGIORE
YACHT SERVICE - Marine Electricity Lake Maggiore.
Marine technology: criteria for battery selection.
YACHT SERVICE - Marine Electricity Lake Maggiore
presents some aspects to be considered when choosing the board batteries:
Choosing the right battery on board of a boat or yacht is not always easy. However, a battery suitable for its purpose is a basic requirement for the best possible use of the battery.
Two aspects are hidden behind the last statement: safety and operating costs.
On board, a distinction must be made between three different uses of batteries:
- Starter batteries (allows the engine to start)
- Consumer batteries (lighting, refrigerator, stereo ...)
- Propulsion batteries (electric engines)
Regardless of whether it is a conventional wet lead-acid battery, gel battery, AGM battery or lithium-ion battery, the universal battery is unfortunately not available. Each of these battery types has its special characteristics and is therefore more or less suitable for one or the other application.
High-quality batteries are normally developed either as starter, consumer or drive batteries, because the different areas of application result in different battery designs.
Starter batteries are designed to deliver highest currents for a few seconds, even at low temperatures.
The relevant indication on the battery refers to the maximum cold start current "CCA" (Cold Cranking Ampere). When selecting a starter battery in conjunction with the mounted starter motor, this specification is decisive and accordingly more important than the capacity of the battery.
Wet batteries, as typical starter batteries, have the disadvantage that excessive discharge (maximum 15% - 20%) leads to a premature end of their life cycle.
Consumer batteries must be able to supply power to lighting, navigation instruments, refrigerator and possibly also to operate "power-hungry" auxiliary equipment (anchor winch, electric winch, bow thruster ...) over a long period of time.
They must always have sufficient capacity for this purpose. Furthermore, the possibility of a deeper discharge with a high number of discharging and charging processes must be guaranteed. Depending on the type of consumer connected, e.g. an anchor winch, these batteries may have to be able to supply a high current for several minutes.
The capacity of these batteries is usually specified for a 20-hour (C20) or 5-hour (C5) discharge. This means, for example, that a charged battery with the specification C20 100 Ah must be able to supply a current of 5 A over 20 hours.
Propulsion batteries should ensure the propulsion of a ship for a sufficient period of time. For this purpose, their capacity must be large enough without their weight and volume impairing the use of the ship and above all safety during navigation.
In addition, a high number of cycles should be guaranteed with regard to the discharging and charging processes.
Combination batteries are of course offered; these are so-called "all-rounders", where the respective design must logically deviate from the maximum performance in favour of universal applicability.
Choosing the right battery on board of a boat or yacht is not always easy. However, a battery suitable for its purpose is a basic requirement for the best possible use of the battery.
Two aspects are hidden behind the last statement: safety and operating costs.
On board, a distinction must be made between three different uses of batteries:
- Starter batteries (allows the engine to start)
- Consumer batteries (lighting, refrigerator, stereo ...)
- Propulsion batteries (electric engines)
Regardless of whether it is a conventional wet lead-acid battery, gel battery, AGM battery or lithium-ion battery, the universal battery is unfortunately not available. Each of these battery types has its special characteristics and is therefore more or less suitable for one or the other application.
High-quality batteries are normally developed either as starter, consumer or drive batteries, because the different areas of application result in different battery designs.
Starter batteries are designed to deliver highest currents for a few seconds, even at low temperatures.
The relevant indication on the battery refers to the maximum cold start current "CCA" (Cold Cranking Ampere). When selecting a starter battery in conjunction with the mounted starter motor, this specification is decisive and accordingly more important than the capacity of the battery.
Wet batteries, as typical starter batteries, have the disadvantage that excessive discharge (maximum 15% - 20%) leads to a premature end of their life cycle.
Consumer batteries must be able to supply power to lighting, navigation instruments, refrigerator and possibly also to operate "power-hungry" auxiliary equipment (anchor winch, electric winch, bow thruster ...) over a long period of time.
They must always have sufficient capacity for this purpose. Furthermore, the possibility of a deeper discharge with a high number of discharging and charging processes must be guaranteed. Depending on the type of consumer connected, e.g. an anchor winch, these batteries may have to be able to supply a high current for several minutes.
The capacity of these batteries is usually specified for a 20-hour (C20) or 5-hour (C5) discharge. This means, for example, that a charged battery with the specification C20 100 Ah must be able to supply a current of 5 A over 20 hours.
Propulsion batteries should ensure the propulsion of a ship for a sufficient period of time. For this purpose, their capacity must be large enough without their weight and volume impairing the use of the ship and above all safety during navigation.
In addition, a high number of cycles should be guaranteed with regard to the discharging and charging processes.
Combination batteries are of course offered; these are so-called "all-rounders", where the respective design must logically deviate from the maximum performance in favour of universal applicability.
YACHT SERVICE - Marine Electricity Lake Maggiore.
Your specialist company for boat electrics advises and installs coming up to ISO standards.
YACHT SERVICE - Marine Electricity Lake Maggiore
will be pleased to advise you on the planning and execution of the electrical system, in particular on the choice of the boat batteries and the appropriate charger. The following table can be helpful in selecting the optimal boat battery type:
Marine Electricity Lake Maggiore
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